No. 106-21
Service Bulletin Details
Public Details for: No. 106-21
Instructions on the manufacturers certificate for approved tires and wheels.
- 2022 -
Models from 2022
2022 PORSCHE 911 GT3 |
4 911 (992) Manufacturer's Certificate 106/21 ENU 4400 Approved Wheels and Tires (106/21) Revision: This bulletin replaces bulletin Group 4 101/21, dated November 29, 2021. Model Year: As of 2022 Vehicle Type: Type 992: 911 GT3 Information: Approval status: November 2021 Sizes: Permissible summer tires and wheel sizes Porsche offers the following snow chains as accessories: Tire sizes Wheel sizes Snow chains FA: 9.5J x 20, RO 46 RA: 12J x 21, RO 45 No FA: 9J x 20, RO 43 RA: 11.5J x 21, RO 46 RA only 911 GT3 Summer 20/21” FA: 255/35 ZR 20 (97Y) XL RA: 315/30 ZR 21 (105Y) XL 20/21” FA: 255/35 ZR 20 (93Y) RA: 315/30 ZR 21 (105Y) XL Winter 20–/21” FA: 245/35 R 20 95V XL RA: 305/30 R 21 104V XL *) Not for vehicles with Porsche Ceramic Composite Brake (PCCB). AfterSales Jan 7, 2022 Page 1 of 8 4 911 (992) 4400 Wheels: Manufacturer's Certificate ENU 106/21 Overview of Porsche wheels for summer and winter tires Identification on inside of wheel: Wheel size, rim offset (RO) in mm, part number (without color code FFF) and Porsche logo 20"-wheel "GT3" FA: 9.5J x 20, RO 46 (summer) Part No. 9GT.601.025.Q_FFF FA: 9J x 20, RO 43 (winter) Part No. 9GT.601.025.B_FFF GT3 21"-wheel "GT3" RA: 12J x 21, RO 45 (summer) Part No. 9GT.601.025.R_FFF RA: 11.5J x 21, RO 46 (winter) Part No. 9GT.601.025.C_FFF GT3 Information Improper handling can damage the wheel surface. Carry out tire removal and mounting using a bead holding-down device only. Use a leather pad on the rim flange to support the valve insertion tool. Only use the Porsche centering clamping set for balancing. Do not use brushes to clean the wheels because brushes can cause deep scratches that cannot be removed by polishing. Never use solvents or other chemical substances on tires. Jan 7, 2022 Page 2 of 8 AfterSales 911 (992) Manufacturer's Certificate Wheel Mounting: 106/21 ENU 4400 4 using wheel bolts: Tightening torque 160 Nm (118 ftlb.) using central wheel lock: Tightening torque 600 Nm (444 ftlb.) Summer tires: Tire make and type / Label value (link to EU database) Tire size 911 GT3 Michelin Pilot Sport Cup 2 N0 FA: https://eprel.ec.europa.eu/qr/410894 RA: https://eprel.ec.europa.eu/qr/408874 Goodyear Eagle F1 Super Sport R N0 FA: 255/35 ZR 20 (97Y) XL RA: 315/30 ZR 21 (105Y) XL FA: https://eprel.ec.europa.eu/qr/530187 RA: https://eprel.ec.europa.eu/qr/530188 Michelin Pilot Sport Cup 2 R N0 FA: https://eprel.ec.europa.eu/qr/409102 RA: https://eprel.ec.europa.eu/qr/408957 FA: 255/35 ZR 20 (93Y) RA: 315/30 ZR 21 (105Y) Winter tires: Pirelli P-Zero Corsa N0 FA: https://eprel.ec.europa.eu/qr/596215 RA: https://eprel.ec.europa.eu/qr/596216 Tire make and type / Label value (link to EU database) Tire size 911 GT3 Michelin Pilot Alpin 5 N5 FA: https://eprel.ec.europa.eu/qr/411084 FA: 245/35 R 20 95V XL RA: 305/30 R 21 104V XL RA: https://eprel.ec.europa.eu/qr/410097 Goodyear Ultragrip Performance Gen-1 N0 FA: https://eprel.ec.europa.eu/qr/529616 RA: https://eprel.ec.europa.eu/qr/529627 AfterSales Jan 7, 2022 Page 3 of 8 4 911 (992) 4400 Manufacturer's Certificate ENU 106/21 *) Not for vehicles with Porsche Ceramic Composite Brake (PCCB). Arrow with inscription “Rotation” = directional mounting "Inside/Outside" inscription = mounting on specified side only Arrow with both inscriptions “Rotation” and “Inside/Outside” = directional mounting on specified side only. Information If a tire is damaged and it is not possible to determine with absolute certainty that there is no ply damage - with all of its consequences - or if the tire was thermally and/or mechanically overloaded due to a loss of pressure or other prior damage, replace the tire in question for safety reasons. Repairs to "V", "W", "Y" and "ZR" tires are not permissable, as well as the use of inner tubes in tubeless tires. Please inform your customers accordingly. It is advisable to mount winter tires at temperatures below 45° F/7°C , because the driving characteristics of summer tires are reduced at low temperatures. Extremely low temperatures can cause permanent damage to summer tires. Information "N..." = Specification code of the tire, e.g. "NA0", "NA1", "NA2" ... The complete “N ...” code of the relevant tire makes must be shown on the tire sidewall near the type designation. Instructions for correct mounting of the tires are also given on the tire sidewall. If there are no mounting instructions on the tire sidewall, the tire must be mounted so that the DOT marking is visible from the outside. WARNING Driving with different tires (mixed tires) • Uncontrollable vehicle handling Only use tires of the same make and type, with the same speed index and the same specification code (NA0, NA1, NA2, etc.) on a vehicle. Tire pressure: WARNING Incorrect tire pressure • Uncontrollable vehicle handling Adjust the tire pressure according to specifications. Never allow the pressure to fall below the minimum pressure. Check age of tires. Replace tires that are more than 6 years old. Perform visual inspections. Use only tires recommended by Porsche. Jan 7, 2022 Page 4 of 8 AfterSales 911 (992) Manufacturer's Certificate 106/21 ENU 4400 4 WARNING Driving at high speed with low tire pressure can cause irreparable damage to tires. Set Comfort air pressure for tires only on vehicles with Tire Pressure Monitoring System (TPMS) and “Comfort” selected in the "Tire pressure" main menu in the multi-function display. Information The tire pressure applies only to the tire makes and types approved by Porsche, and is specified for cold tires (approx. 68° F/20°C ). The tire pressures must never be lower than the specified values. Standard tire pressure for summer tires + UHP Standard tire pressure for summer tires + UHP 911 GT3 Tire size Wheel size Standard pressure up to Vmax Axle Performance pressure up to 290 km/h (180 mph) 255/35 ZR 20 9.5J x 20 FA 2.2 bar 220 kPa 32 psi 1.9 bar 190 kPa 28 psi 315/30 ZR 21 12J x 21 RA 2.4 bar 240 kPa 35 psi 2.1 bar 210 kPa 30 psi FA / RA 19-inch spare wheel 3.5 bar (50 psi) Standard tire pressure for winter tires Standard tire pressure for winter tires 911 GT3 Tire size Wheel size Standard pressure up to Vmax Axle Performance pressure up to 290 km/h (180 mph) 245/35 R 20 9J x 20 FA 2.3 bar 230 kPa 33 psi – 305/30 R 21 11.5J x 21 RA 2.5 bar 250 kPa 36 psi – AfterSales Jan 7, 2022 Page 5 of 8 4 911 (992) Manufacturer's Certificate ENU 106/21 4400 Snow chains: WARNING Incorrectly installed snow chains • Uncontrollable vehicle handling Do not exceed the maximum speed of Speed 30 mph/50 km/h. Observe installation instructions from the chain manufacturer. Porsche offers the following snow chains as accessories: Tire size Porsche Part No. Type of snow chain 305/30 R 21 992.044.690.A Link-type chain, quick fit The snow chain tension must be readjusted after driving about 3 km (2 miles)! Wheel Storage: • • • • • • • • General Information: • • • • • Jan 7, 2022 Page 6 of 8 Tires must be stored in a cool, dry and dark room with adequate ventilation. Tires must never come into contact with fuel, oil, grease or chemicals. Do not store summer tires in storage areas with ambient temperatures of less than 5° F (-15° C). Complete wheel & tire assemblies can be stacked for storage; we recommend that you increase the tire pressure by approximately 6 psi (0.4 bar). Optimum conditions for storage of the complete wheels are provided by the Original Porsche storage trolley, Part No. 000.044.000.38. If the tires are not mounted on wheels, it is best to store them in a vertical position. We recommend that you turn tires stored in this position every two weeks in order to prevent flat spots. Tires that are stacked in a horizontal position will become severely deformed and cannot be seated properly in the rim flange when they are mounted. Always use new valves when changing tires. Always observe any possible instructions concerning the rolling direction and/or specifying which side the tires must be mounted on. Coat the tire beads and humps with mounting lubricant before mounting the tire. This ensures that the tire beads will slide over the humps easily. In order to prevent the tire from turning on the wheel, avoid extreme driving maneuvers (acceleration and braking) during the first 100 to 200 miles with new or recently mounted tires. In order to optimize smoothness of rolling, it is appropriate - and necessary in individual cases - to mount the tire in a certain (favorable) position with respect to the wheel (matching). AfterSales 911 (992) Manufacturer's Certificate 106/21 ENU 4400 4 Matching (uncontrolled and controlled) is explained below: Uncontrolled matching: • Turning the tire on the wheel by 90° or 120° if necessary in order to achieve an acceptable value with regard to rolling smoothness (true running, imbalance and weight distribution of balance weights). Controlled matching: • • • With a balancing machine with matching program. In most cases, this produces an even better result with regard to the rolling smoothness (true running, imbalance and weight distribution of the balance weights) than can be achieved with uncontrolled matching. Maximum permissible radial runout and lateral runout of the wheels < 0.7 mm. Maximum permissible radial runout and lateral runout of the wheels with tires < 1.25 mm. Values < 1.50 mm -ideally approx. 0.5 mm - are desirable. The mounting pressure (seating pressure) of 58 psi/4.0 bar overpressure must not be exceeded before both tire beads are evenly seated on the rim flange. New Tires (Replacements): • • • • If new tires are to be mounted or the tires of one axle are to be replaced, tires of the same make, type and with the same specification code must always be used on each of the two axles. If tires are replaced on one axle only, the different tread depth from that on the other axle can cause a noticeable change in the familiar handling. This is especially the case if new tires are mounted on the rear axle. This effect decreases with increasing tire mileage. When replacing a tire on an axle, make sure that the tread depth of the new tire does not differ from that of the other tire on the same axle by more than 30 %. Refer to WM 449503 for specific details of the vehicle you are working on. • • >The 2mm specification will be given here. > If there is none listed then the default is 30%. Repairs to Tires: • • If a tire is damaged and it cannot be determined with absolute certainty that there is no ply damage - with all of its consequences - or if the tire was thermally or mechanically overloaded due to a loss of pressure or other prior damage, we recommend replacement of the tire in question for safety reasons. Repairs to "V", "W", "Y", and "ZR" tires are not permissible, as is the use of inner tubes in tubeless tires. AfterSales Jan 7, 2022 Page 7 of 8 4 911 (992) Manufacturer's Certificate ENU 106/21 4400 Tire Aging: • • • • • • • Tires age due to chemical and physical processes, which can impair their function. Tires that are stored unused for an extended period harden and become brittle faster than tires that are in continual use. Hairline aging cracks can occur on older tires. On tires in continual use, the kneading action activates the plasticizer in the rubber and thereby prevents hardening and cracking. Therefore, attention should be paid not only to the tread depth but also to the age of the tire. Tires should not be older than 6 years. The age of the tire can be determined via the DOT code on the sidewall, which indicates the production date of the tire: e.g. DOT 2201= 22nd week of 2001. Important Notice: Technical Bulletins issued by Porsche Cars North America, Inc. are intended only for use by professional automotive technicians who have attended Porsche service training courses. They are written to inform those technicians of conditions that may occur on some Porsche vehicles, or to provide information that could assist in the proper servicing of a vehicle. Porsche special tools may be necessary in order to perform certain operations identified in these bulletins. Use of tools and procedures other than those Porsche recommends in these bulletins may be detrimental to the safe operation of your vehicle, and may endanger the people working on it. Properly trained Porsche technicians have the equipment, tools, safety instructions, and know-how to do the job properly and safely. Part numbers listed in these bulletins are for reference only. The work procedures updated electronically in the Porsche PIWIS diagnostic and testing device take precedence and, in the event of a discrepancy, the work procedures in the PIWIS Tester are the ones that must be followed. © 2021 Porsche Cars North America, Inc. Jan 7, 2022 Page 8 of 8 AfterSales